[Theme: Cascadia] Lost drop down menus with 3.5 Upgrade

When I updated to WP 3.5 the drop down menus in the Header stopped working. It is not a plug-in issue. Any idea how to fix this?

http://www.gottadancerapid.com

Here is the CSS code:

/*————————————-
3. HEADER
————————————-*/

#header {
padding: 0 4px;
}

/*– 3.1 LOGO –*/

#logo {
float: left;
}

#logo {
padding-top: 2px;
}

#logo h1 {
float: left;
}

#logo h3 {
float: left;
margin-left: 0px;
font: 12px/26px Georgia, “Times New Roman”, Times, serif;
font-style: italic;
color: #999999;
letter-spacing: 0px;
text-shadow: 0px 1px 0 rgba(255, 255, 255, 1);
}

#logo h1.logo,
#logo h1.logo a {
line-height: 0px;
font-size: 0px;
}

#logo h1.logo.plain-text,
#logo h1.logo.plain-text a {
line-height: 24px;
font-size: 24px;
letter-spacing:-1px;
color: #363636;
}

/*– 3.2 NAV –*/

#nav {
float: right;
padding-right:5px;
}

#nav ul {
float: left;
list-style: none;
margin-top:30px;
}

#nav ul li {
float: left;
margin-left: 30px;
line-height: 12px;
}

#nav ul li:first-child {
margin-left: 0px;
}

#nav ul li.current-menu-item,
#nav ul li.current-menu-parent,
#nav ul li.current_page_parent {
background: url(images/nav-current-left.png) no-repeat left;
display: inline-block;
padding: 0 0 0 11px;
}

#nav ul li.current-menu-item span,
#nav ul li.current-menu-parent span,
#nav ul li.current_page_parent span {
background: url(images/nav-current-right.png) no-repeat right;
display: inline-block;
}

#nav ul li a {
font-size: 15px;
font-weight: bold;
color: #303030;
text-shadow: 0px 1px 1px rgba(255, 255, 255, 1);
text-decoration: none;
padding: 8px 0 9px 0;
display: inline-block;
}

#nav ul li a:hover {
text-decoration: underline;
}

#nav ul li.current-menu-item a,
#nav ul li.current-menu-parent a,
#nav ul li.current_page_parent a {
color: #ffffff;
padding: 8px 11px 10px 0;
text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.50);
}

/*– 3.3 NAV / DROPDOWN –*/

.sub-menu {
list-style: none;
display: none;
position: absolute;
width: 175px;
z-index: 500;
margin: 0 0 0 -15px !important;
box-shadow: 0 0px 6px rgba(0, 0, 0, 0.1);
-moz-box-shadow: 0 0px 6px rgba(0, 0, 0, 0.1);
-webkit-box-shadow: 0 0px 6px rgba(0, 0, 0, 0.1);
margin-top: 15px !important;
border-radius: 5px;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
}

li.last .sub-menu {
margin-left: -125px !important;
}

.sub-menu li {
margin: 0 !important;
}

.sub-menu a {
display: inline-block;
background: #fff;
padding: 0 0 0 17px !important;
height: 33px;
line-height: 33px;
width: 158px;
font-size: 12px;
color: #606060 !important;
border-bottom: 1px solid #f2f2f2;
text-shadow: none !important;
}

.sub-menu li {
padding: 0 !important;
background: 0 !important;
}

.sub-menu li:first-child a {
border-radius: 5px 5px 0 0;
-moz-border-radius: 5px 5px 0 0;
-webkit-border-radius: 5px 5px 0 0;
}

.sub-menu li:last-child a {
border-bottom: 0;
border-radius: 0 0 5px 5px;
-moz-border-radius: 0 0 5px 5px;
-webkit-border-radius: 0 0 5px 5px;
}

.sub-menu a:hover {
background: url(images/bg_nav_submenu.png) repeat-x #f2f2f2 !important;
text-decoration: none !important;
border-bottom-color: #eaeaea;
}

.sub-menu li:hover ul,
.sub-menu li.sfHover ul {
border-radius: 5px;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
margin-left: 170px !important;
margin-top: -39px !important;
}

.sub-menu ul li:first-child a, .sub-menu ul li.first a {
background: #fff;
border-radius: 5px 5px 0 0;
-moz-border-radius: 5px 5px 0 0;
-webkit-border-radius: 5px 5px 0 0;
padding-top: 5px !important;
}